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-   -   How-to Check a Guitar with Multimeter? (http://www.ultimate-guitar.com/forum/showthread.php?t=1562192)

techroach 09-10-2012 03:09 PM

How-to Check a Guitar with Multimeter?
 
I've a 6month old Epiphone Les Paul Custom. Lately, the signal output from it isn't consistent. Once in a while, one pickup (mostly bridge) goes almost dead (very low volume). The kind where, the hammer-ons and pull-offs don't sound. :confused:

Since the service center is a 300km hike for me, I want to find out what the actual problem is, before giving it for repair (which itself isn't authorized Epiphone service).

Can some experts please (pretty please) help me??? :(

Kevin Saale 09-10-2012 03:17 PM

You need to eliminate the variable first. Make sure its not your amp or your instrument cables.

You say its mostly the bridge, but that implies it happens to the neck pup as well? If it isn't totally isolated to one pup I'd say the pups aren't the issue. I'd actually guess it was the switch if the problem does end up being with the guitar.

seljer 09-10-2012 03:20 PM

Unfortunatley, its hard to test intermittent things.

If its just the bridge pickup, try rewiring it directly to the jack, with no potentiometer, no switch. If it works like that that'll rule out the pickup. You then know you just need replace the switch and/or the pot which isn't such costly thing.

eddiehimself 09-10-2012 03:20 PM

My guess is it's the switch. They usually **** up on these gibson-style guitars.

J_W 09-10-2012 05:06 PM

Check the input jack first, it's the easiest to fix and it's easy to see if there is a bad connection. You can always pop open the back cover and just look and see if you can spot any loose wires.

EpiEvoExplorer 09-10-2012 10:37 PM

Switch.

techroach 09-11-2012 10:08 AM

Quote:
You need to eliminate the variable first. Make sure its not your amp or your instrument cables.

You say its mostly the bridge, but that implies it happens to the neck pup as well? If it isn't totally isolated to one pup I'd say the pups aren't the issue. I'd actually guess it was the switch if the problem does end up being with the guitar.


Well, the problem was only with the bridge pickup. But last week, I had same problem pop up in my neck pickup too.. But thats just one time. So, its 99% bridge pickup.

Anyway to test the switch?

Quote:
My guess is it's the switch. They usually **** up on these gibson-style guitars.


I'm also hearing the same. Is there anyway to test the switch?

eddiehimself 09-11-2012 10:18 AM

Quote:
Originally Posted by techroach
I'm also hearing the same. Is there anyway to test the switch?


Well the best way to test the switch would be to take off the switch cover and see what it looks like. If it looks something like this:



then it is almost certainly a problem with the switch.


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